Presented herein is a technique to provide Fifth Generation (5G) core (5GC) redundancy from a Fourth Generation (4G) Evolved Packet Core (EPC). In particular, for a 4G-5G interworking scenario, if a Session Management Function (SMF) set is implemented, the technique presented herein provides that an initial combined SMF and control plane Packet Data Network (PDN) Gateway (PGW-C) [referred to herein as SMF+PGW-C] can provide to a Serving Gateway (SGW), at session creation time, address information of all the SMF+PGW-Cs belonging to the same SMF set. The SGW can use the address information to facilitate failover to an alternate SMF+PGW-C belonging to the SMF set, in case the initial SMF+PGW-C does not respond to the SGW.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.